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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 4 |
| 3 | 88 |
| 4 | 868 |
| 5 | 4554 |
| 6 | 8008 |
| 7 | 45154 |
| 8 | 89698 |
| 9 | 452254 |
| 10 | 4526254 |
| 11 | 8996998 |
| 12 | 830333038 |
| 13 | 862626268 |
| 14 | 899969998 |
| 15 | 4058008504 |
| 16 | 45032023054 |
| 17 | 45229592254 |
| 18 | 89999699998 |
| 19 | 405485584504 |
| 20 | 4503764673054 |
| 21 | 8187727277818 |
| 22 | 8999996999998 |
| 23 | 89178266287198 |
| 24 | 455467838764554 |
| 25 | 833066101660338 |
[0,4,88,868,4554,8008,45154,89698,452254,4526254, 8996998,830333038,862626268,899969998,4058008504, 45032023054,45229592254,89999699998,405485584504, 4503764673054,8187727277818,8999996999998, 89178266287198,455467838764554,833066101660338] |